本文件适用于设计用于医疗实践的内窥镜。它规定了测量要求，并描述了测量内窥镜视野和视野方向的两种试验方法。方法A使用距离远端窗口的距离来计算视野。方法B使用与进入瞳孔的距离。如果获得同等结果，可使用其他试验方法。

This document applies to endoscopes designed for use in the practice of medicine. It specifies measurement requirements and describes two test methods for measuring the field of view and direction of view of endoscopes. Method A uses the distance from the distal window to calculate the field of view. Method B uses the distance from the entrance pupil. Other test methods can be used if they obtain equivalent results.